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Numerical Inequalities · Question 59 of 79

She bakes 24 loaves. What is the greatest whole number of cakes she can also bake?

Question 59

HardOriginal question

A baker has 18 kg of flour for the day. A loaf of bread uses 0.4 kg of flour and a cake uses 0.6 kg. She must bake at least 15 loaves for her regular customers.

She bakes 24 loaves. What is the greatest whole number of cakes she can also bake?

Options for question 59

Show the answer and explanation
CorrectNot quiteAnswer A

Correct answer: A

Explanation

  1. 24 loaves use 24×0.4=9.624 \times 0.4 = 9.6 kg, leaving 8.4 kg.

  2. 0.6y≤8.4⇒y≤140.6y \le 8.4 \Rightarrow y \le 14.

Worth noting

15 cakes would need 9 kg, more than the 8.4 kg left.

Concept
A whole-number answer to an inequality
Typical time
150 s
Your time
—
The rule this testsSolving inequations
Practise this chapter →

Ten questions from Numerical Inequalities, at your own pace.

Practise this chapter →

Ten questions from Numerical Inequalities, at your own pace.